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The 400a had a speed chuck. You have a 400. It would not be worth converting it, go find a 400a or a 300. The 400s did not have a footswitch and if they have a serial number ridge will supply one at no charge marvin

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The 400a had a speed chuck. You have a 400. It would not be worth converting it, go find a 400a or a 300. The 400s did not have a footswitch and if they have a serial number ridge will supply one at no charge marvin

hi Rod I have a 400 with the handle type manual chuck was hoping a newer speed chuck would mount on this machine thanks for your help Mike Dryden